WO2023075190A1 - Cellule de batterie de type poche à sécurité améliorée - Google Patents

Cellule de batterie de type poche à sécurité améliorée Download PDF

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Publication number
WO2023075190A1
WO2023075190A1 PCT/KR2022/014968 KR2022014968W WO2023075190A1 WO 2023075190 A1 WO2023075190 A1 WO 2023075190A1 KR 2022014968 W KR2022014968 W KR 2022014968W WO 2023075190 A1 WO2023075190 A1 WO 2023075190A1
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WO
WIPO (PCT)
Prior art keywords
separator
electrode assembly
case
pouch
type battery
Prior art date
Application number
PCT/KR2022/014968
Other languages
English (en)
Korean (ko)
Inventor
강경수
김미나
유형균
Original Assignee
주식회사 엘지에너지솔루션
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지에너지솔루션 filed Critical 주식회사 엘지에너지솔루션
Priority to JP2023522888A priority Critical patent/JP2023551092A/ja
Priority to EP22879574.6A priority patent/EP4216356A1/fr
Priority to CN202280007282.0A priority patent/CN116438703A/zh
Priority to US18/035,225 priority patent/US20230420792A1/en
Publication of WO2023075190A1 publication Critical patent/WO2023075190A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a pouch-type battery cell with improved safety, and more particularly, by providing a rupture induction unit inside the case to induce rupture of the case using pressure during swelling, and furthermore, to easily remove the front and rear surfaces of the battery cell. It relates to a pouch-type battery cell with improved identifiable safety.
  • secondary batteries are an alternative energy source for fossil fuels that cause air pollutants, and are used in electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (P-HEVs) and energy storage devices (ESSs). etc. are applied.
  • EVs electric vehicles
  • HEVs hybrid electric vehicles
  • P-HEVs plug-in hybrid electric vehicles
  • ESSs energy storage devices
  • Types of secondary batteries that are currently widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and the like.
  • Such a secondary battery is generally formed by accommodating an electrode assembly and an electrolyte solution in a battery case, and depending on the type of battery case, a cylindrical battery and a prismatic battery in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and an electrode assembly It can be classified as a pouch-type battery built into a cell case of an aluminum laminate sheet.
  • pouch-type battery cells require more attention because, unlike cylindrical or prismatic batteries, the thickness of the case surrounding the battery cell is thin and flexible.
  • the pouch-type battery cell has a structure that simply seals the electrode assembly, there is no reliable safety means to ensure safety.
  • Patent Document 1 Korean Patent Publication No. 2003-0097964
  • the present invention is to provide a pouch-type battery cell with improved safety that can prevent secondary accidents such as fire or explosion by rupturing the case before thermal runaway occurs in the pouch-type battery cell.
  • the purpose is to provide a pouch-type battery cell with improved safety that can prevent secondary accidents such as fire or explosion by rupturing the case before thermal runaway occurs in the pouch-type battery cell.
  • an object of the present invention is to provide a pouch-type battery cell with improved safety that can increase the speed and accuracy of manufacturing by easily identifying the front and rear surfaces of the battery cell when manufacturing a battery module or battery pack.
  • a pouch-type battery cell for achieving the above object includes an electrode assembly 100 including a negative electrode 110, a separator 120, and a positive electrode 130; And a cell case 200 composed of a lower case 210 and an upper case 220 for forming a space S to accommodate the electrode assembly 100; including, the cell case 200 It is characterized in that the space portion (S) of the cell case 200 is provided with a rupture inducing unit 300 for inducing rupture of the cell case 200 when the internal pressure of the cell case 200 increases.
  • the rupture inducing part 300 is characterized in that it has a three-dimensional shape having a predetermined volume.
  • the rupture inducing part 300 includes a core part 310 and a coating part 320 surrounding the core part 310, but the core part 310 is made of a metal material. And, the coating portion 320 is characterized in that made of a resin of a non-conductive material.
  • the rupture inducing part 300 is characterized in that it is made of a resin of a non-conductive material.
  • the rupture inducing part 300 is formed between the inner surface of the electrode assembly 100 and the lower case 210 and/or the inner surface of the electrode assembly 100 and the upper case 220. It is characterized in that more than one is provided.
  • the rupture inducing part 300 is provided in plurality between the inner surface of the electrode assembly 100 and the lower case 210 and between the inner surface of the electrode assembly 100 and the upper case 220.
  • the disposition structure of the rupture inducing part 300 provided on the inner surface of the lower case 210 and the inner surface of the upper case 220 is different from each other.
  • the lower case 210 and / or the upper case 220 is characterized in that the place where the rupture inducing part 300 is disposed is in a convex protruding state.
  • the electrode assembly 100 when the electrode assembly 100 is composed of a separator 120, a negative electrode 110, a separator 120, and a positive electrode 130 in order from the outermost to the inner direction
  • the rupture inducing part 300 is characterized in that it is located between the outermost separation membrane 120 of the electrode assembly 100 and the inner surface of the cell case 200.
  • the rupture inducing part 300 is characterized in that it is fixed to the outermost separator 120 and/or the inner surface of the cell case 200.
  • the electrode assembly 100 is composed of a separator 120, a negative electrode 110, a separator 120, and a positive electrode 130 in order from the outermost to the inner direction Characterized in that the rupture inducing part 300 is located between the separator 120 located at the outermost part of the electrode assembly 100 and the negative electrode 110 located adjacent to the separator 120 located at the outermost part to be
  • the electrode assembly 100 includes an auxiliary separator 120', a separator 120, a negative electrode 110, a separator 120, and a positive electrode ( 130), the rupture inducing part 300 is located between the auxiliary separator 120' of the electrode assembly 100 and the separator 120 adjacent to the auxiliary separator 120' to be characterized
  • the present invention is characterized by providing a battery pack including the pouch-type battery cell described above.
  • a rupture inducing member is provided inside the cell case, so that when a swelling phenomenon occurs inside the case, it induces rapid rupture of the case, thereby preventing fire or explosion in advance.
  • the pouch-type battery cell with improved safety of the present invention it is easy to identify the front and rear surfaces of the battery cell by changing the arrangement structure of the rupture inducing member provided inside the upper case and the lower case, and assembling the battery module or battery pack. It can contribute to improving the speed and accuracy of the manufacturing process.
  • FIG. 1 is an exploded perspective view of a pouch-type battery cell according to a first embodiment of the present invention.
  • Figure 2 is a plan view of the pouch-type battery cell shown in Figure 1.
  • FIG. 3 is a cross-sectional view of a portion of the pouch-type battery cell shown in FIG. 1 cut along the A-A′ direction.
  • FIG. 4 is a perspective view showing an example of a rupture inducing unit according to a first embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a rupture inducing unit according to a first embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a part of a secondary battery according to a second embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of a part of a secondary battery according to a third embodiment of the present invention.
  • FIG. 1 is an exploded perspective view of a pouch-type battery cell according to a first embodiment of the present invention
  • FIG. 2 is a plan view of the pouch-type battery cell shown in FIG. 1
  • FIG. 3 is a pouch-type battery cell shown in FIG. It is a cross-sectional view of a part cut along the A-A ⁇ direction.
  • a pouch-type battery cell with improved safety includes an electrode assembly 100, a cell case 200 accommodating the electrode assembly 100, and a rupture induction unit 300.
  • the electrode assembly 100 accommodated in the cell case 200 is a jelly-roll type electrode assembly, or a rectangular shape having a structure in which a separator 120 is interposed between the long sheet-shaped negative electrode 110 and the positive electrode 130 and then wound up.
  • a stacked electrode assembly composed of unit cells in which the positive and negative electrodes of a structure are stacked with a separator interposed therebetween, a stack-folding electrode assembly in which unit cells are wound by a long separator film, or unit cells are separated by a separator It may be made of lamination-stack type electrode assemblies, etc., which are stacked with the electrodes interposed therebetween and attached to each other, but are not limited thereto.
  • the negative electrode 110 is manufactured by applying a slurry in which a negative electrode active material and a binder are mixed to a negative electrode current collector.
  • examples of the negative electrode active material include carbon such as non-graphitizable carbon and graphite-based carbon; Li x Fe 2 O 3 (0 ⁇ x ⁇ 1), Li x WO 2 (0 ⁇ x ⁇ 1), Sn x Me 1-x Me' y O z (Me: Mn, Fe, Pb, Ge; Me' : Metal composite oxides such as Al, B, P, Si, elements of groups 1, 2, and 3 of the periodic table, halogens, 0 ⁇ x ⁇ 1;1 ⁇ y ⁇ 3;1 ⁇ z ⁇ 8); lithium metal; lithium alloy; silicon-based alloys; tin-based alloys; SnO, SnO 2 , PbO, PbO 2 , Pb 2 O 3 , Pb 3 O 4 , Sb 2 O 3 , Sb 2 O 4 , Sb 2 O 5 , GeO, GeO 2 , Bi 2 O 3 , Bi 2 O 4 , metal oxides such as Bi 2 O 5 ; conductive polymers such as polyacetylene; Li
  • the positive electrode 130 is manufactured by applying a slurry in which a positive electrode active material and a binder are mixed to a positive electrode current collector.
  • the negative electrode current collector and the positive electrode collector are composed of a portion coated with a slurry mixed with an active material and a non-coated portion where the slurry is not applied. form a tab
  • An electrode lead 140 is connected to the electrode tab by spot welding or the like, and an insulating film 150 is positioned around the electrode lead 140 .
  • the insulating film 150 is located in the sealing portion where the lower case 210 and the upper case 220 are heat-sealed to fix the electrode lead 140 to the cell case 200 .
  • the insulating film 150 is preferably made of a non-conductive material that does not conduct electricity well, and generally uses an insulating tape that is easy to attach to the electrode lead 140 and has a relatively thin thickness, but is not limited thereto.
  • the cell case 200 is composed of a lower case 210 and an upper case 220, and has a pocket-shaped space portion S to accommodate the electrode assembly 100.
  • the cell case 200 uses a laminate sheet composed of an outer coating layer, a metal layer, and an inner coating layer to form a space portion capable of accommodating the electrode assembly 100 .
  • the inner coating layer Since the inner coating layer is in direct contact with the electrode assembly 100, it must have insulation and electrolytic resistance, and must have excellent heat sealing strength for sealing with the outside, that is, a sealing portion where the inner layers are thermally bonded to each other.
  • Materials for the inner coating layer may be selected from polyolefin resins such as polypropylene, polyethylene, polyethylene acrylic acid, and polybutylene, polyurethane resins, and polyimide resins, which have excellent chemical resistance and good sealing properties, but are not limited thereto, Polypropylene having excellent mechanical properties such as tensile strength, rigidity, surface hardness, and impact resistance and chemical resistance is most preferred.
  • polyolefin resins such as polypropylene, polyethylene, polyethylene acrylic acid, and polybutylene, polyurethane resins, and polyimide resins, which have excellent chemical resistance and good sealing properties, but are not limited thereto, Polypropylene having excellent mechanical properties such as tensile strength, rigidity, surface hardness, and impact resistance and chemical resistance is most preferred.
  • a metal layer in contact with the inner coating layer corresponds to a barrier layer that prevents moisture or various gases from permeating into the battery from the outside, and a lightweight aluminum film having excellent formability can be used as a preferable material for the metal layer.
  • an outer coating layer is provided on the other side of the metal layer, and the outer coating layer can use a heat-resistant polymer having excellent tensile strength, moisture permeability, and air permeability to secure heat resistance and chemical resistance while protecting the electrode assembly,
  • a heat-resistant polymer having excellent tensile strength, moisture permeability, and air permeability to secure heat resistance and chemical resistance while protecting the electrode assembly
  • nylon or polyethylene terephthalate may be used, but is not limited thereto.
  • the lower case 210 and the upper case 220 are completely separated in the drawing, one edge of the lower case 210 and the upper case 220 may be connected, and the lower case 210 Any one of the case and the upper case 220 may have a flat plate structure without a separate space.
  • the rupture inducing unit 300 ruptures the cell case 200 by inducing the cell case 200 to swell when the internal pressure increases due to swelling in the cell case 200, and through this, the lead and the corresponding lead before thermal runaway occurs. It is a configuration to minimize secondary damage such as fire or explosion by blocking the connection.
  • the rupture inducing unit 300 may be formed in a three-dimensional shape having a predetermined volume.
  • a spherical shape in the shape of a round ball, a polygonal column in which four or more planes meet to form a three-dimensional shape, a conical shape, a truncated cone, a truncated pyramid, a shape composed of a plane and a curved surface, etc. are particularly limited if they can have their own volume. I never do that.
  • the size is not particularly limited, but since it must be located on the inner surfaces of the electrode assembly 100 and the cell case 200, the maximum inner diameter is preferably 6 mm or less.
  • the rupture inducing part 300 as described above is the inner surface of the electrode assembly 100 and the lower case 210, the inner surface of the electrode assembly 100 and the upper case 220, or the inner surface of the electrode assembly 100 and the lower case 210. It is preferable to be provided on both the side surface and between the electrode assembly 100 and the inner surface of the upper case 220, and more preferably provided in plurality.
  • the electrode assembly 100 and the lower case 210 and between the inner surface of the electrode assembly 100 and the upper case 220 are provided on both the inner surface of the electrode assembly 100 and the lower case 210 and between the inner surface of the electrode assembly 100 and the upper case 220, and when provided in plurality, the inner surface of the lower case 210 and The arrangement structure of the first rupture inducing part 310 located between the electrode assemblies 100 and the second rupture inducing part 320 located between the inner surface of the upper case 220 and the electrode assembly 100 are different from each other. good night.
  • a battery module is obtained by stacking a plurality of battery cells.
  • the battery cells must be sequentially stacked in a predetermined direction.
  • a pouch-type battery cell in which a space is provided in both the upper case and the lower case, it is difficult to easily identify the upper case and the lower case because the outer case is similar.
  • the rupture inducing unit 300 when the rupture inducing unit 300 is provided on the inner surface of the upper case 220 and the inner surface of the lower case 210, the outer surface of the lower case 210 and the upper case 220 due to the volume of the rupture inducing unit 300 itself. may protrude somewhat convexly.
  • the disposition structure of the rupture inducing part 300 provided on the inner surface of each case is different, the upper case 220 and the lower case 210 can be easily checked with the naked eye, thereby facilitating the lamination process and increasing the accuracy of the process. there is.
  • a total of six (2X3) first rupture inducing units 310 are provided on the inner surface of the lower case 210 at a predetermined interval
  • the inner surface of the upper case 220 is shown as being provided with a total of six (3X2) second tear inducing parts 320, such as three in the horizontal direction and two in the vertical direction, but this is only an example of tearing. It is obvious that the number of induction units and the arrangement structure can be variously changed.
  • the electrode assembly 100 composed of the separator 120, the cathode 110, the separator 120, and the anode 130 in order from the outermost to the inner direction is accommodated. 300 may be located between the outermost separator 120 of the electrode assembly 100 and the inner surface of the cell case 200 .
  • the rupture inducing part 300 can remain fixed without a separate fixing means.
  • it may be fixed using an adhesive made of a known non-conductive material so that it can be securely fixed in a desired position.
  • the rupture inducing part 300 can be formed together.
  • the rupture inducing part 300 since the rupture inducing part 300 needs to directly contact the electrode assembly 100, it is preferably made of polypropylene, polyethylene, or polyimide resin, which has no chemical reaction with the electrolyte and is a non-conductive material.
  • FIG. 5 is a cross-sectional view of a rupture inducing unit according to a first embodiment of the present invention.
  • the first rupture inducing part 310 When the rupture inducing part 300 is strongly adhered to the inner surface of the cell case 200 due to the internal pressure of the cell case 200, the first rupture inducing part 310 has a core part 311 to minimize the decrease in volume. And it may be composed of a coating portion 312 surrounding it.
  • the core part 311 may be made of aluminum or a metal material, and the coating part 312 is not made of polypropylene, polyethylene, or polyimide resin, which is a non-conductive material, so that the core part 311 and the electrode assembly 100 do not conduct electricity. It is desirable to
  • the second rupture inducing part 320 may also be composed of a core part and a coating part in the same way as the first rupture inducing part 310 .
  • FIG. 6 is a cross-sectional view of a part of a secondary battery according to a second embodiment of the present invention.
  • the electrode assembly 100 composed of the separator 120, the negative electrode 110, the separator 120, and the positive electrode 130 in order from the outermost part toward the inside is accommodated.
  • the first rupture inducing part 310 and the second rupture inducing part 320 are the separator 120 positioned at the outermost part of the electrode assembly 100 and the cathode 110 positioned adjacent to the outermost separator 120. ) can be located between
  • the first rupture inducing part 310 and the second rupture inducing part 320 are inserted during the manufacturing process of the electrode assembly 100, and in this case, they can be fixed together without a separate fixing means.
  • FIG. 6 shows that the vicinity of the first rupture inducing part 310 and the second rupture inducing part 320 are empty, this is to explain in more detail where these rupture inducing parts are located, the negative electrode 110 and the separator (120) maintains close contact.
  • FIG. 7 is a cross-sectional view of a part of a secondary battery according to a third embodiment of the present invention.
  • the electrode assembly 100 composed of the auxiliary separator 120′, the separator 120, the cathode 110, the separator 120, and the anode 130 in order from the outermost to the inner direction is accommodated.
  • the first rupture inducing part 310 and the second rupture inducing part 320 may be located between the auxiliary separator 120' of the electrode assembly 100 and the separator 120 adjacent to the auxiliary separator 120'. there is.
  • the auxiliary separator 120' is intended to cover the outermost separator 120 once more for the purpose of improving insulation, the first rupture inducing part 310 and the second rupture inducing part 320 are formed like the second embodiment. ) is inserted during the manufacturing process of the electrode assembly 100, and can be fixed together without a separate fixing means.
  • a plurality of such pouch-type battery cells can be stacked to form one battery module or battery pack, and they can also be used as a power source for various devices such as electric vehicles and energy storage devices.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

La présente invention concerne une cellule de batterie de type poche présentant une sécurité améliorée et, plus spécifiquement, une cellule de batterie de type poche comprenant : un ensemble électrode comprenant une électrode négative, un séparateur et une électrode positive ; et un boîtier de cellule constitué d'un boîtier inférieur et d'un boîtier supérieur pour former une partie d'espace afin de pouvoir recevoir l'ensemble électrode, la partie d'espace du boîtier de cellule étant pourvue d'une unité d'induction de rupture pour induire la rupture du boîtier de cellule lorsque la pression interne du boîtier de cellule augmente.
PCT/KR2022/014968 2021-11-01 2022-10-05 Cellule de batterie de type poche à sécurité améliorée WO2023075190A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2023522888A JP2023551092A (ja) 2021-11-01 2022-10-05 安全性が向上したパウチ型電池セル
EP22879574.6A EP4216356A1 (fr) 2021-11-01 2022-10-05 Cellule de batterie de type poche à sécurité améliorée
CN202280007282.0A CN116438703A (zh) 2021-11-01 2022-10-05 具有改善的安全性的软包型电池单体
US18/035,225 US20230420792A1 (en) 2021-11-01 2022-10-05 Pouch-Shaped Battery Cell With Improved Safety

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0148144 2021-11-01
KR1020210148144A KR20230063178A (ko) 2021-11-01 2021-11-01 안전성이 향상된 파우치형 전지셀

Publications (1)

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WO2023075190A1 true WO2023075190A1 (fr) 2023-05-04

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US (1) US20230420792A1 (fr)
EP (1) EP4216356A1 (fr)
JP (1) JP2023551092A (fr)
KR (1) KR20230063178A (fr)
CN (1) CN116438703A (fr)
WO (1) WO2023075190A1 (fr)

Citations (6)

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KR20190023648A (ko) * 2017-08-29 2019-03-08 주식회사 엘지화학 벤팅 유도 장치를 포함하는 파우치형 이차전지
KR20190032019A (ko) * 2017-09-19 2019-03-27 주식회사 엘지화학 벤팅부를 포함하는 파우치형 이차전지
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